Looking at drainage network module, there are few different Downstream_Boundaries listed in the wiki and I would like to have some more explanations about their significations...Especially, I do not understand what does mean : Critical Depth condition.

Back to this topic... Sorry... But I tried to run a simulation with the third BOUNDARY CONDITION : imposed water level and I had an error message.. So I think , I am doing something wrong in defining this parameter.

The error you get does not have anything to do with the downstream boundary conditions. It states that there is a mismatch between the DrainageNetwork you are using and the DrainageNetwork you obtained during basin delineation. This usually occurs in two cases:1. Your basin geometry file is not match the parameters you used when you generated the drainage network (location of the outlet and Treshold area)2. You changed your DTM after you generated the drainage network.

Concerning the Downstream Boundary Condition:I have been working "hard" on the Drainage Network Downstream Boundary Condition. The present version of MOHID at mohid.codeplex.com has many correction, but you have to compile it...

The version you are using, do not work very well with imposed levels, if you have huge flooding. Currently I'm testing the new version and I will release a new compiled version as soon as possible. If you run into trouble, I recommend that you use: DOWNSTREAM_BOUNDARY : 2This options works well. But you can also try the imposed value (it's not bad at all in your version).

Hope this helps,Frank

In order to understand recursivity you must first understand recursivity.

Hello all,I wanted to start a simulation with some flow in the network, and I guessed that the keyword I had to change is INITIAL_WATER_DEPTH in the drainage network module, but I´m not sure..There is no ploblem when it is set to 0.0, but when I give a value to this parameter, it appears an error (I´ve tried with 0.3, 1 and 2, taking into account that the minimum depth of the defined cross sections is 0.7m). Let me know please if I´m wrong, but isnt this a constant value for all the network?Thanks